Kensington MP230L Multi Surface Wireless USB Performance Mouse (K72453WW) Track-on-glass laser with 1600 DPI high-definition sensor for the ultimate control 2.4GHz wireless USB connection allows for complete freedom and mobility Full-size comfort with two-button, scroll wheel design Two side buttons provide additional browser navigation options Dedicated DPI adjustment buttons near scroll wheel fine-tune cursor control Plug & Play installation so you can be up and clicking fast Compatible with Windows and Mac